Home / 99,680.80-137,554.32-61,954.24

Finding the Fourth Proportional to 99,680.80, 137,554.32 and 61,954.24

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Solution

The fourth proportional to 99,680.80, 137,554.32 and 61,954.24 is: 85,493.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,680.80 : 137,554.32 = 61,954.24 : x
  2. Step 2: Convert to fraction form
    99,680.80/137,554.32 = 61,954.24/x
  3. Step 3: Cross multiply
    99,680.80x = 137,554.32 × 61,954.24
  4. Step 4: Simplify right side
    99,680.80x = 8,522,073,354.32
  5. Step 5: Solve for x
    x = 8,522,073,354.32/99,680.80
  6. Step 6: Final answer
    x = 85,493.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.